SIT3: Code Summarization with Structure-Induced Transformer

• URL: http://arxiv.org/abs/2012.14710v1
• Date: Tue, 29 Dec 2020 11:37:43 GMT
• Title: SIT3: Code Summarization with Structure-Induced Transformer
• Authors: Hongqiu Wu and Hai Zhao and Min Zhang
• Abstract summary: We propose a novel model based on structure-induced self-attention, which encodes sequential inputs with highly-effective structure modeling. Our newly-proposed model achieves new state-of-the-art results on popular benchmarks.
• Score: 48.000063280183376
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Code summarization (CS) is becoming a promising area in recent natural language understanding, which aims to generate sensible annotations automatically for source code and is known as programmer oriented. Previous works attempt to apply structure-based traversal (SBT) or non-sequential models like Tree-LSTM and GNN to learn structural program semantics. They both meet the following drawbacks: 1) it is shown ineffective to incorporate SBT into Transformer; 2) it is limited to capture global information through GNN; 3) it is underestimated to capture structural semantics only using Transformer. In this paper, we propose a novel model based on structure-induced self-attention, which encodes sequential inputs with highly-effective structure modeling. Extensive experiments show that our newly-proposed model achieves new state-of-the-art results on popular benchmarks. To our best knowledge, it is the first work on code summarization that uses Transformer to model structural information with high efficiency and no extra parameters. We also provide a tutorial on how we pre-process.

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